record type with List or IEnumerable property fails ShouldBeEquivalentTo #1507
Description
Before you file a bug, have you:
Description
A record with a List or IEnumerable property fails with BeEquivalentTo
Complete minimal example reproducing the issue
using System.Collections.Generic;
using FluentAssertions;
using Xunit;
namespace fluent_assertion_record_issue
{
internal record ObjectWithList
{
public List<string> Prop { get; init; }
}
public class UnitTest1
{
[Fact]
public void Test1()
{
var obj = new ObjectWithList()
{
Prop = new List<string>()
{
"a", "b", "c"
}
};
var obj2 = new ObjectWithList()
{
Prop = new List<string>()
{
"a", "b", "c"
}
};
// assert
// fails
obj2.Should().BeEquivalentTo(obj,opts=>opts.WithTracing());
}
}
}Expected behavior:
Should succeed without error.
Actual behavior:
fluent_assertion_record_issue.UnitTest1.Test1
Expected obj2 to be ObjectWithList { Prop = System.Collections.Generic.List`1[System.String] }, but found ObjectWithList { Prop = System.Collections.G...
Xunit.Sdk.XunitException
Expected obj2 to be ObjectWithList { Prop = System.Collections.Generic.List`1[System.String] }, but found ObjectWithList { Prop = System.Collections.Generic.List`1[System.String] }.
With configuration:
- Use declared types and members
- Compare enums by value
- Match member by name (or throw)
- Without automatic conversion.
- Be strict about the order of items in byte arrays
With trace:
Treating root as a value type because Equals must be used.
at FluentAssertions.Execution.XUnit2TestFramework.Throw(String message)
at FluentAssertions.Execution.TestFrameworkProvider.Throw(String message)
at FluentAssertions.Execution.CollectingAssertionStrategy.ThrowIfAny(IDictionary`2 context)
at FluentAssertions.Equivalency.EquivalencyValidator.AssertEquality(EquivalencyValidationContext context)
at FluentAssertions.Primitives.ObjectAssertions.BeEquivalentTo[TExpectation](TExpectation expectation, Func`2 config, String because, Object[] becauseArgs)
at fluent_assertion_record_issue.UnitTest1.Test1() in /Users/richardcollette/temp/fluent-assertion-record-issue/UnitTest1.cs:line 37Versions
FluentAssertions 5.10.3
.NET SDK (reflecting any global.json):
Version: 5.0.201
Commit: a09bd5c86c
Runtime Environment:
OS Name: Mac OS X
OS Version: 10.15
OS Platform: Darwin
RID: osx.10.15-x64
Microsoft.AspNetCore.App 5.0.4
Microsoft.NETCore.App 5.0.4
Additional Information
If the record type in the example is replaced with class, then it does succeed. The issue appears to be specific to record types.